section 238316 - radiant-heating hydronic …€¦ · web viewif tube passes metal expansion joints...

Copyright 2013 AIA MasterSpec Premium 03/13PRODUCT MASTERSPEC LICENSED BY ARCOM TO VIEGA LLC.

This Product MasterSpec Section is licensed by ARCOM to Viega LLC ("Licensee").

This Product MasterSpec Section modifies the original MasterSpec text, and does not include the full content of the original MasterSpec Section.

Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by, or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec Section by any end user. A qualified design professional should review and edit the document to suit project requirements.

For more information, contact Viega LLC, 585 Interlocken Blvd., Broomfield, CO 80021; Phone: (800) 976-9819; Website: www.viega.us; Email: [email protected].

For information about MasterSpec contact ARCOM at (800) 424-5080 or visit www.MasterSpec.com.

SECTION 238316 - RADIANT-HEATING HYDRONIC PIPING

TIPS:

To hide non-printing Editor's Notes that provide guidance for editing, click on Office button, Word Options, Dis-play and Toggle Hidden Text.

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes radiant-heating piping, consisting of pipes, fittings, and piping specialties.

B. Distribution manifolds and compatible fittings.

C. Fasteners approved by manufacturer.

D. Mixing assemblies.

E. Controls.

1.3 DEFINITIONS

A. CWP: Cold working pressure.

RADIANT-HEATING HYDRONIC PIPING 238316 - 1


B. PEX: Crosslinked polyethylene.

C. PEX/AL/PE: Crosslinked polyethylene/aluminum/polyethylene.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include data for piping, fittings, manifolds, specialties, and controls; include pressure and temperature ratings, oxygen-barrier performance, fire-performance characteristics, and water-flow and pressure-drop characteristics.

B. Shop Drawings: Show piping layout and details drawn to scale, including valves, manifolds, controls, and support assemblies, and their attachments to building structure.

1. Shop Drawing Scale: [1/8 inch = 1 foot (1:100)] <Insert scale>.

2. Shop drawings and calculations reports with the following information.

a. Submit circuit layout that shows manifold location, pipe spacing, pipe size, circuit length, flow rates, head loss, supply water temperatures for heating, and supply water temperatures for cooling if applicable.

b. Provide calculation reports that show output of the heating/cooling system to include any excess or shortages of heating or cooling, heating/cooling entering the space, flow rates, head loss, back losses of heating/cooling, floor covering resistance, and floor surface temperatures.

c. Submit floor cross section details with fastener(s) being used, fastener spacing, insulation requirements, thermal mass thickness (if required), and intended floor covering.

d. Submit details of manifold, manifold cabinets, valves, and fittings either in a flush mounted installation or a recessed location.

e. Submit details of slab penetrations.

1.5 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Reflected ceiling plan(s) and other details, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved:

1. Suspended ceiling components.2. Structural members to which radiant-heating piping will be attached.3. Expansion joints and slab penetrations.4. Items penetrating finished ceiling:

1.6 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For radiant-heating piping valves and equipment to include in operation and maintenance manuals.



B. Technical Data Sheets.

C. Product Instructions.

D. Design Calculation reports.

1.7 WARRANTY

A. Manufacturer warranty shall include the following:

1. In the event that manufacturer determines that the failure or leak and any resulting damages were the result of a manufacturing defect in the products covered by the warranty and occurred during the first ten years of the time period covered by the warranty, the manufacturer will reimburse the property owner for reasonable repair or replacement charges resulting from the failure or leak and, additionally will reimburse damages to personal property resulting from the failure or leak.

2. Radiant heat pipe manufacturer shall warranty the tubing under normal conditions of use and properly maintained, will be free from failure caused by manufacturing defect for a period of thirty (30) years from date of installation, when properly installed by contractors trained by manufacturer.

3. PEX Press fittings, when installed with ViegaPEX Barrier and FostaPEX tubing, will be free from failure caused by manufacturing defect for a period of thirty (30) years from date of installation. This also includes protected PEX Press fitting in a slab.

4. Manifolds and panels used in the system will be free from manufacturing defect for a period of five (5) years.

5. Controls, mixing stations, or electrical components sold by manufacturer shall be free from manufacturing defect for a period of two (2) years from date of installation.

PART 2 - PRODUCTS

2.1 PEX PIPE AND FITTINGS

A. Basis-of-Design Product: Subject to compliance with requirements, provide Viega LLC; [FostaPEX][SVC Compression Copper Adapter][SVC Compression PEX Adapter][SVC Press Adapter][ViegaPEX Barrier] or a comparable product by one of the following:

1. <Insert manufacturer's name>.

B. Pipe Material:

1. PEX tubing and fittings shall maintain a quality control program in accordance with ISO 9001 or NSF International in the manufacturing plant to assure that the tubing and fittings are continually being produced to the required standard.

2. Tubing shall be silane cross-linked high density polyethylene as per ASTM F876/F877 and CSA B137.5.

3. Tubing includes four layers.



a. First layer: Cross-linked, high density polyethylene.b. Second layer: Adhesive.c. Third layer: Ethylene vinyl alcohol layer (EVOH oxygen barrier).d. Fourth layer: Polyethylene to protect the EVOH layer from damage.

4. Certified to NSF 14 and 61.5. Tubing will have 6 month UV protection.6. Certified to UL 263 ULC S101 for floor and wall assemblies.7. Certified to ASTM E84 and ULC S102.2 Flame Spread (FS)/Smoke Developed (SD)

(25/50).

C. Oxygen Barrier: Limit oxygen diffusion through the tube to maximum 0.10 mg per cu. m/day at 104 deg F (40 deg C) according to DIN 4726.

D. Bronze Fittings: PEX Press Fittings manufactured from UNS [C83600] [C87700] [C87710] copper alloy, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX Barrier tubing.

1. PEX Press Sleeve: Manufactured out of a 304 grade or better stainless steel, and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.

2. Attached sleeve fitting will incorporate a tool locator ring that shall be in place while making a proper press connection.

3. PEX press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.

E. Polymer Fittings: PEX Press Fittings manufactured from Radel-R® polymer, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX Barrier tubing.

1. PEX Press sleeve: manufactured out of a 304 grade or better stainless steel and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.

2. Fitting will include the Smart Connect feature providing quick easy identification of unpressed connections during the pressure testing process.

3. Unpressed connections are located by pressurizing the system to 0.5 psi to 100 psi (3.4 kPa to 689 kPa).


5. PEX Press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.

F. Pressure/Temperature Rating: ViegaPEX Barrier High-Density Cross-linked polyethylene tubing shall meet the standard grade hydrostatic pressure ratings from the Plastic Pipe Institute in accordance with TR-4/03. The following three ratings are required:

1. 200 deg F (93 deg C) at 80 psi (551 kPa).2. 180 deg F (82 deg C) at 100 psi (689 kPa).3. 73.4 deg F (23 deg C) at 160 psi (1102 kPa).



2.2 PEX/AL/PE PIPE AND FITTINGS

A. Basis-of-Design Product: Subject to compliance with requirements, provide Viega LLC; <product name or designation> or a comparable product by one of the following:


B. Pipe Material:

1. Viega FostaPEX tubing and fittings shall maintain a quality control program in accordance with ISO 9001 or NSF International, and IAPMO R&T in the manufacturing plant to assure that the tubing and fittings are continually being produced to the required standard.

2. Tubing shall be silane cross-linked high density polyethylene as per ASTM F 876/F 877 and CSA B137.5.

3. Tubing is produced to IAPMO Standard IGC 212.4. Tubing includes three (3) layers:

a. First layer is cross-linked, high density polyethylene.b. Second layer is aluminumc. Third layer is polyethylene.

5. Certified to NSF 14 and 61.6. Tubing will have 6 month UV protection or longer.

C. Oxygen Barrier: Limit oxygen diffusion through the tube to maximum 0.10 mg per cu. m/day at 104 deg F (40 deg C) according to DIN 4726.

D. Bronze Fittings: PEX Press Fittings manufactured from UNS [C83600] [C87700] [C87710] copper alloy, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX tubing.

1. PEX Press Sleeve: Manufactured out of a 304 grade or better stainless steel, and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.


3. PEX press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.

E. Polymer Fittings: PEX Press Fittings manufactured from Radel®R polymer, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX tubing.

1. PEX Press sleeve: manufactured out of a 304 grade and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.

2. Fitting will include the Smart Connect feature providing quick easy identification of unpressed connections during the pressure testing process.

3. Unpressed connections are located by pressurizing the system to 0.5 psi to 100 psi (3.4 kPa to 689 kPa).




5. PEX Press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.

F. Pressure/Temperature Rating: ViegaPEX Barrier High-Density Cross-linked polyethylene tubling shall meet the standard grade hydrostatic pressure ratings from the Plastic Pipe Institute in accordance with TR-4/03. The following three ratings are required:

1. 200 deg F (93 deg C) at 80 psi (551 kPa).2. 180 deg F (82 deg C) at 100 psi (689 kPa).3. 73.4 deg F (23 deg C) at 160 psi (1102 kPa).

2.3 DISTRIBUTION MANIFOLDS

A. Stainless Manifold with Balancing Valves and Flow Meters: Minimum NPS 1 1/4 (DN 32).

1. Manifolds shall be made of 304 Stainless Steel with nickel-plate valve necks on select models.

2. Flow meters, balancing valves, and shut off valves are integrated on manifold.3. Air bleeders and two purge valves are to be integrated on manifold.4. Manifolds have 1 inch (25 mm) NPT removable end caps and 1 1/4 inch (32 mm) Union

connections.5. Galvanized steel bracket supplied by Viega,6. Select manifold cabinet based on manifolds, accessories and fittings added.7. Accept optional powerheads for individual zone control.8. Manifold is suitable to receive all SVC connections.9. Flow Meters for Stainless Manifolds:

a. Visual Flow Indicator: Visible indication in a clear plastic cap at top of valve.b. Body Brass: Nickel plated.c. Internal Parts: Plastic, EPDM.d. Inlet Connection: NPS 1/2 (DN 15), 1/2 inch (12.7 mm) with o-ring.e. Measure range: 0 - 2 gpm.f. Handle Style: Rotating ring with lockable cap, no memory stop to retain set

position if used for shut off.g. CWP Rating: 100 psi (69 kPa).

10. Thermometers:

a. Mount on connection.b. Case: Stainless steel, 2 inch (50 mm) diameter.c. Element: Bimetal coil element.d. Movement: Mechanical, connecting element and pointer.e. Dial: White aluminum, black lettering.f. Pointer: Aluminum, black.g. Window: Instrument glass, NS 33 polycarbonate.h. Connector: Rigid, back type.i. Accuracy: Plus or minus 2 percent of range.

11. Maximum Operating Pressure: 100 psi (69 kPa).12. Maximum Operating Temperature: 180 deg F (82 deg C).



B. Stainless Manifolds with Balancing Valves: Minimum NPS 1 1/4 (DN 32).

1. Manifolds shall be made of 304 Stainless Steel with nickel-plate valve necks on select models.

2. Balancing valves and shut off valves are integrated on manifold.3. Air bleeders and purge valves are to be integrated on manifold.4. Manifolds have 1 inch (25 mm) NPT removable end caps and 1 1/4 inch (32 mm) NPT

Union connections.5. Use bracket supplied by Viega.6. Select manifold cabinet based on manifolds, accessories and fittings added.7. Accept optional powerheads for individual zone control.8. Manifold circuit connections are suitable to receive all SVC connections.9. Maximum Operating Pressure: 100 psi (69 kPa).10. Maximum Operating Temperature: 180 deg F (82 deg C).

C. Balancing Valves for Stainless Manifolds:

1. Body: Brass, nickel plated.2. Valve Spindle: Brass, EPDM.3. Inlet Connection: NPS 1/2 (DN 15), 1/2 inch (12.7 mm) with o-ring.4. Operator: Allen Wrench - 5 mm.5. CWP Rating: 145 psi (100 kPa).6. Maximum Operating Pressure: 100 psi (69 kPa).7. Maximum Operating Temperature: 180 deg F (82 deg C).

D. Manual Air Vents:

1. Body: Brass, nickel-plated.2. Operator: Key furnished with valve, or screwdriver bit.3. Inlet Connection: NPS 1/2 (DN 15).4. Maximum Operating Pressure: 100 psi (69 kPa).5. Maximum Operating Temperature: 180 deg F (82 deg C).

E. Main Shutoff Valves for Stainless Manifolds:

1. Field installed on supply and return connections.2. Two-piece body.3. Body: Brass nickel-plated body.4. Ball: Full port chrome-plated brass.5. Seals: PTFE.6. Stem: Brass with 2 Buna-N o-rings and blowout proof assembly.7. CWP Rating: 100 psig (689 kPa).8. Maximum Operating Temperature: 180 deg F (82 deg C).

F. Powerheads for Stainless Manifolds (4-wire):

1. Integrated micro switch with floating contact.2. Voltage: 24 VAC.3. Maximum Inrush Current: <300 mA for 2 minutes maximum.4. Operating Power: 1 watt.5. Closing/Opening Time: Approximately 3.5 minutes.



6. Stroke: 0.16 inch (4 mm).7. Actuating Force: 21 lbs (93 N).8. Weight: 5.5 oz (0.16 kg).9. Fluid Temperature: 32 deg F (0 deg C) to 212 deg F (100 deg C).10. End Switch: Normally open.11. Micro Switch: 24 VAC / 0.5 A.12. Switching Point: 0.08 inch (2 mm).13. Visual Function Indicator.14. 360 degree Installation Position.15. Snap-on Installation.

G. Powerheads for Stainless Manifolds (2-wire):

1. Voltage: 24 VAC2. Maximum Inrush Current: <300 mA for 2 minutes maximum.3. Operating Power: 1 watt.4. Closing/Opening Tine: Approximately 3.5 minutes.5. Stroke: 0.16 inch (4 mm).6. Actuating Force: 21 lbs (93 N).7. Weight: 5.5 oz (0.16 kg).8. Fluid Temperature: 32 deg F (0 deg C) to 212 deg F (100 deg C).9. Visual Function Indicator.10. 360 deg Installation Position.11. Snap-on Installation.

H. Powerheads for Stainless Manifolds (0-10VDC):

1. Voltage: 24 VAC 50/60 Hz.2. Control voltage: 0-10 VDC.3. Max inrush current: < 320 mA during max. 2 min.4. Operating power 1 watt.5. Actuating force: 21 lbs (93 N).6. Stroke: 4 mm.7. Fluid temperature: 32 deg F (0 deg C) to 212 deg F (100 deg C).8. Max pressure differential: 50 psi (345 kPa).9. Connecting cable length: 3'.

I. Copper Manifolds - Valved:

1. Manufactured to the requirements of ASTM B 88 and of type L copper.2. Headers are fitted with shutoff or shutoff balancing valves with PEX Press connection

type.

J. Copper Manifolds - Valveless:

1. Manufactured to the requirements of ASTM B 88 and of type L copper.

K. Pressure Seal Main Shutoff Valves for Copper Manifolds:

1. Two piece body.2. Body: Bronze.



3. Ball: 316 stainless steel ball, full port.4. Seals: EPDM sealing elements5. Stem Seals: EPDM6. Lockable metal handle.7. Press ends with Smart Connect feature.8. Operating Temperature: 0 deg F (-18 deg C) to 250 deg F (121 deg C).9. Maximum Operating Pressure: 200 psi (1,379 kPa).10. 600 WOG.

L. Balancing Valves for Copper Manifolds

1. Body: Brass2. Ball: Plated brass.3. Ball Seal: Teflon™.4. Ball Spindle: Nickel plated brass.5. Spindle O-rings: EPDM and Viton™.6. Metering Spindle: Nickel plated brass.7. Spindle O-ring: Viton™.8. Working Temperature: 250 deg F (121 deg C).9. Working Pressure: 250 psi (1,724 kPa).

M. Mounting Brackets for Copper Manifold:

1. Bracket Material: Steel zinc-plated with rubber liners.

N. Zone Control Valve (ProPress x ProPress):

1. Body:

a. Max pressure differential: 50 psi (345 kPa).b. Cv rating 3/4" valve: 4.0.c. Cv rating 1" valve: 8.5.d. Fluid temperature: 32 deg F (0 deg C) to 212 deg F (110 deg C).e. Stem travel: 4mm.f. Body material: Low zinc bronze, alloy C84400.g. Seat: Bronze, C84400. Integral part of valve body.h. Valve Disc: EPDM / Brass.i. Valve Spring: Stainless Steel.j. Valve Stem: Burnished 303 Stainless Steel.k. Packing: Double EPDM.l. Ratings: ANSI250 per ASME B16-22-2013.

2. Motor:

a. Voltage: 24 Volts.b. Max inrush current: 300 mA, for 2 minutes.c. Operating power: 1watt.d. Closing/opening time: Approximately 3 minutes.e. Actuating force: 21 lbs (93 N).

3. Inlet / Outlet Connections:



a. For Types K, L, and M hard copper tubing 3/4 inch (19 mm) or 1 inch (25 mm) and soft copper tubing in 3/4 inch (19 mm) to 1 inch (25 mm).

b. Housing: Copper or bronze.c. Smart Connect Feature.d. Sealing Element: EPDM.e. Tools: Manufacturer's special tools.

O. Zone Control Valve (ProPress x PEX Press):

1. Body:

a. Max pressure differential: 50 psi (345 kPa).b. Cv rating ¾" valve: 4.0.c. Cv rating 1" valve: 8.5.d. Fluid temperature: 32 deg F (0 deg C) to 212 deg F (110 deg C).e. Stem travel: 4mm.f. Body material: Low zinc bronze, alloy C84400.g. Seat: Bronze, C84400. Integral part of valve body.h. Valve Disc: EPDM / Brass.i. Valve Spring: Stainless Steel.j. Valve Stem: Burnished 303 Stainless Steel.k. Packing: Double EPDM.l. Ratings: ANSI250 and per ASME B16-22-2013.

2. Motor:


3. Inlet Connection (ProPress):


b. Housing: Copper or bronze.c. Smart Connect Feature.d. Sealing Element: EPDM.e. Tools: Manufacturer's special tools.

4. Outlet Connection (PEX Press):

a. Bronze Fittings: PEX Press Fittings manufactured from UNS [C83600] [C87700] [C87710] copper alloy, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX Barrier tubing or FostaPEX tubing.

b. PEX Press Sleeve: Manufactured out of a 304 grade or better stainless steel, and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.

c. Attached sleeve fitting will incorporate a tool locator ring that shall be in place while making a proper press connection.



d. PEX press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.

P. Zone Control Valve (Sweat x PEX Press):

1. Body:

a. Max pressure differential: 50 psi (345 kPa).b. Cv rating 3/4" valve: 4.0.c. Cv rating 1" valve: 8.5.d. Fluid temperature: 32 deg F (0 deg C) to 212 deg F (110 deg C).e. Stem travel: 4mm.f. Body material: Low zinc bronze, alloy C84400.g. Seat: Bronze, C84400. Integral part of valve body.h. Valve Disc: EPDM / Brass.i. Valve Spring: Stainless Steel.j. Valve Stem: Burnished 303 Stainless Steel.k. Packing: Double EPDM.l. Ratings: ANSI250 and per ASME B16-22-2013.

2. Motor:


3. Inlet Connection (solder)


b. Yellow Brass: 3/4 inch (19 mm) to 1 inch (25 mm) as per ASME B16-22-2013 manufactured from UNS [C85200] – [C85800] copper alloy.

c. Sealing Gasket: Between Union and Valve Body; Black EPDM, peroxidically cured.

4. Outlet Connection (PEX Press)

a. Bronze Fittings: PEX Press Fittings manufactured from UNS [C83600] [C87700] [C87710] copper alloy, meeting the requirements of ASTM F 877 tested as a system with ViegaPEX Barrier tubing or FostaPEX tubing.

b. PEX Press Sleeve: Manufactured out of a 304 grade or better stainless steel, and have three view holes with an attached sleeve to ensure proper PEX tubing insertion.

c. Attached sleeve fitting will incorporate a tool locator ring that shall be in place while making a proper press connection.

d. PEX press connection shall be made with a Viega supplied ratcheting PEX Press hand tool or PEX Press power tool.



2.4 PIPING SPECIALTIES

A. Cable Ties:

1. Self-extinguishing, one-piece, self-locking, Type 6/6 nylon cable ties.2. Minimum Width: 0.17 inch (4.3 mm).3. Tensile Strength: 75 lb (34 kg), minimum.

B. Floor Mounting Staples:

1. Steel, with corrosion-resistant coating and smooth finish without sharp edges.2. Minimum Thickness: 0.055 inch (1.4 mm).3. Width: 0.962 inch (1.57 mm).

C. Floor Mounting Clamps:

1. Two bolts, steel, with corrosion-resistant coating and smooth finish without sharp edges.2. Minimum Thickness: 3/32 inch (2.4 mm).3. Width: Minimum, wider than tubing.

D. Floor Mounting Tracks:

1. Aluminum or plastic channel track with smooth finish and no sharp edges.2. Minimum Thickness: 1/16 inch (1.6 mm).3. Slot Width: Snap fit to hold tubing.4. Slot Spacing: [2 inch (50 mm)] [3 inch (75 mm)] <Insert dimension> intervals.

E. Climate Mat: Pre-engineered preassembled in slab radiant system.

1. Spacer Strip: Semi-rigid 1 inch (25 mm) wide by approximately 5 to 6 feet (1.5 to 1.8 m) long plastic strips.

a. Used with plastic, press-in-place, u-shaped clips to secure the tube every 4 feet (1.2 m) along the run of tube at predetermined spacing.

b. Plastic strip shall be used to secure the Climate Mat assembly to the sub-base prior to the concrete pour.

c. Additional fasteners shall be used as needed.

2. ViegaPEX Barrier Tubing: Saline cross-linked high density polyethylene per ASTM F 876/F 877.

a. Tubing shall include oxygen diffusion barrier in accordance with DIN 4726.b. Tubing shall meet requirements of ANSI/NSF 14 and 61.c. Certified to UL 263 ULC S101 for floor and wall assemblies.d. Certified to ASTM E84 and ULC S102.2 Flame Spread (FS)/Smoke Developed

(SD) (25/50).

F. Insulated Panel Foam-Plastic Board Insulation:



1. 2 inch (51 mm) floor slab insulation: 2 7/8 inch (73 mm) total thickness with 2 inches (51 mm) of solid EPS foam providing an R 10 and 25 psi (172.4 kPa) compressive strength rating.

a. Each Panel to cover 8 sq. ft (0.74 sq. m) with an integral 10 mil polystyrene film providing a perm rating of 51 perms and a fastener for 3/8 inch (9.5 mm), 1/2 inch (12.5 mm), and 5/8 inch (16 mm) ViegaPEX Barrier tubing, or 1/2 inch (12.5 mm) FostaPEX tubing.

b. Panels to have protrusions approximately 2.6 inches (66 mm) in diameter and a height of approximately 0.9 inches (23 mm). Protrusions to be aligned in alternating rows 3 inches (76 mm) apart on center to allow for an accurate tube placement on a 3 inch (76 mm) grid system.

2. Flexural Strength in accordance with ASTM C 203-99, Method 1, Procedure A Modified with results as follows:

a. Shell Covered Face in Tension: 35 psi (240 kPa) maximum fiber stress.b. Exposed EPS Foam Insulation Face in Tension: 66 psi (457 kPa) maximum fiber

stress.

3. Compressive Resistance in accordance with ASTM C 165-00 Modified with results of 25 psi (165 kPa) compressive resistance.

4. Density testing in accordance with ASTM D 1622-03 Modified with results as follows:

a. Foam: 1.646 lb/cubic ft (26.4 kg/cu. m).b. Plastic shell and foam: 1.95 lb/cubic ft (31.2 kg/cu. m).

5. Dimensional Stability testing in accordance with ASTM D 2126-04 7 day at minus 40 deg F (minus 40 deg C) and 7 day at 158 deg F (97 deg C), 97 percent RH, -0.4 percent change in length and -0.1 percent change in thickness.

6. Water Absorption testing in accordance with ASTM C 272-01 Modified resulted in 0.83 percent by volume absorbed.

G. Climate Panel:

1. Plywood: CCX fir plywood with an aluminum heat transfer sheet underneath.2. Product Designation: CANPly Exterior/Interior Plywood.3. Grade: Sheathing (CCX by PS1-95).4. Glue: Bordens 2022 Phenol, Formaldehyde, Resin, Exterior Bond Type X.5. Panels are to be used with 5/16 inch (8 mm) ViegaPEX Barrier Tubing.

H. Trak:

1. Extruded aluminum for radiant heating piping.2. Minimum Thickness: 0.05 inch (1.27 mm).3. 4 feet (1.2 m) or 8 feet (2.4 mm) length with predrilled holes every 11.5 inches (292

mm).4. Accommodate either 3/8 inch (10 mm) or 1/2 inch (12.5 mm) pipe.

I. Heat-emission plates are required for joist-space piping installation below the occupied space.Heat-Emission Plates:



1. Formed aluminum suitable for radiant-heating piping.2. Size: 5 inches (127 mm) wide x 19 inches (483 mm) long.3. Minimum Thickness: 0.016 inch (4 mm).4. Slot Width: Snap fit to maintain pressure fit on tubing.

2.5 PREASSEMBLED STATIONS

A. Mixing devices: specified in Section 230523 "General Duty Valves for HVAC" and Section 232123 "Hydronic Pumps".

B. Basis-of-Design Product: Subject to compliance with requirements, provide Viega LLC; <Insert product name or designation> or comparable product by one of the following:

1. <Insert manufacturer's name.>

C. Hydronic Mixing Block:

1. Input Voltage/Current: 120 VAC ± 10% 60 Hz, 2A.2. Sensors: (2) 10kΩ - 1 boiler sensor, 1 outdoor sensor.3. Boiler Relay: 24VAC 1.0 MAX AMPS.4. Circulator Relay: 24VAC 1.0 MAX AMPS.5. Microprocessor: 8 Bit, 32 MHz.6. Temperature: Maximum Temperature: 203 deg F (95 deg C).7. Pressure: Maximum Working Pressure: 45 psi (310 kPa), Maximum Test Pressure: 100

psi (689 kPa).8. Weight: 10 lbs (4.5 kg).9. Dimensions: 12.18”W x 10”H x 6.7”D.10. Listings:

a. Meets CSA C22.2 No. 24.b. Meets UL Standard 873.c. ETL Control No. 3068143.

D. Enhanced Mixing Station:

1. Enhanced Mixing Station Maximum Operating Pressure: 100 psi (689 kPa).2. Enhanced Mixing Station Maximum Operating Temperature: 180 deg F (82 deg C).3. Connecting Options: Viega PEXPress, ProPress or Copper.4. Mixing Station Piping Material: Type L Copper, ASTM B 88.5. Circulator:

a. Circulator Material: Cast iron.b. Circulator Flow Range: 0 - 17.5 U.S. GPM (0 - 1.1 L/s).c. Circulator Head Range: 0 - 19 ft (0 - 5.8 m).d. Circulator Motor: Permanently magnetized circulator motor, Single Phase, 120 V.e. Circulator Temperature Range: 36 to 230 deg F (2 to 110 deg C).f. Circulator Settings: 7 settings, 3 fixed speeds, 3 constant pressures, and 1

AutoADAPT™.g. Circulator Maximum Discharge Pressure: 150 psi (1,034 kPa).



6. Diverting Valve:

a. Diverting Valve Body: Bronze.b. Diverting Valve Seals: EPDM.c. Diverting Valve Maximum Differential Pressure: 7.3 psi (50 kPa).d. Diverting Valve Cv 7.6.

7. Ball Valve:

a. Ball Valve: Two piece bronze body.b. Ball Valve Ball: 316 stainless steel ball, full port.c. Ball Valve Seals: EPDM sealing elements.d. Ball Valve Stem Seals: EPDM.e. Ball Valve Press Ends: With engineered leak path.f. Ball Valve Operating Temperature: 0 deg F to 250 deg F (-18 deg C to 121 deg

C).g. Ball Valve Maximum Operating Pressure: 200 psi (1,379 kPa).h. Ball Valve: 600 WOG.i. Ball Valve Handles: Metal with standard sticker indicators for supply and return.

E. High Head Mixing Station:

1. High Head Mixing Station Maximum Operating Pressure: 100 psi (689 kPa).2. High head Mixing Station Maximum Operating Temperature: 180 deg F (82 deg C).3. Connection Options: Viega PEX Press, ProPress or Copper.4. Mixing Station Piping Material: Type L Copper, ASTM B 88.5. Circulator:

a. Circulator Material: Cast iron.b. Circulator Flow Range: 0 - 34 U.S. gpm (0 - 2.1 L/s).c. Circulator Head Range: 0 - 30 ft (0 - 9.1 m).d. Circulator Motor: 2 Pole, Single Phase, 120 V.e. Circulator Temperature Range: 36 deg F (2 deg C) to 230 deg F (110 deg C).f. Circulator Max Working Pressure: 145 psi (1,000 kPa).g. Circulator Settings: 3 Speeds.

6. Diverting Valve:

a. Diverting Valve Body: Bronze.b. Diverting Valve Seals: EPDM.c. Diverting Valve Max Differential Pressure: 7.3 psi (50 kPa) d. Diverting Valve Cv: 7.6.

7. Ball Valve:

a. Ball Valve: Two piece bronze body.b. Ball Valve Ball: 316 stainless steel ball, full port.c. Ball Valve Seals: EPDM sealing elements.d. Ball Valve Stem Seals: EPDM.e. Ball Valve Press Ends: with engineered leak path.f. Ball Valve Operating Temperature: 0 deg F (-18 deg C) to 250 deg F (121 deg C).



g. Ball Valve Max Operating Pressure: 200 psi (1,379 kPa).h. Ball Valve 600 WOG.i. Ball Valve Handles: Metal with standard sticker indicators for supply and return.

2.6 CONTROLS

A. Temperature-control devices and sequence of operations are specified in Section 230923 "Direct Digital Control (DDC) System for HVAC" and Section 230993.11 "Sequence of Operations for HVAC DDC."

B. Basis-of-Design Product: Subject to compliance with requirements, provide Viega LLC; [Basic Heating Control][Basic Setpoint Control II][Digital Thermostat][Non-Programmable Heat/Cool Thermostat][Programmable Heat/Cool Thermostat][Multifunctional Heat/Cool Thermostat] or a comparable product by one of the following:


C. Wall-Mounted Thermostat:

1. Minimum temperature range from 41 deg F (5 deg C) to 99 deg F (27 deg C).2. Control: Microprocessor.3. Accuracy: 0.2 deg F (0.11 deg C).4. Optional Floor Sensor: NTC thermistor (10K ohms), 10 feet (305 mm) cable.5. Manually operated with on-off switch.6. Day and manual night setback or external clock.7. Operates normally opened or normally closed valves.8. Operate pumps or open zone control valves if room temperature falls below the

thermostat setting, and stop pumps or close zone control valves when room temperature rises above the thermostat setting.

D. Digital Thermostat:

1. Control: Microprocessor control.2. Accuracy: 0.2.3. Set temperature range: 41 deg F (5 deg C) to 99 deg F (37 deg C), 0.5 deg F (0.28 deg C)

increments.4. Environment range: 32 deg F (0 deg C) to 122 deg F (50 deg C).5. Power supply: 24 V +/_ 10% 60Hz 15 W max.6. Output: TRIAC output 24 VAC, 15 W max.7. Optional floor sensor: NTC thermistor (10K Ohms), 10 foot (3 m) cable.8. Floor limiting range: 50°F - 104°F9. Electrical Protection: Class II - IP30.

E. Non-Programmable Heat/Cool Thermostat:

1. The display range of temperature: 41 deg F (5 deg C) to 95 deg F (35 deg C).2. The control range of temperature: 44 deg F (7 deg C) to 90 deg F (32 deg C).3. Loading Rate: 1 amp per terminal, 1.5 amp maximum all terminals combined.4. Wiring Specifications: Use shielded or nonshielded 18-22 gauge thermostat wire.



5. Display accuracy: ± 1 deg F (0.556 deg C). 6. Swing (cycle rate or differential): Heating is adjustable from 0.2 deg F (0.11 deg C) to

2.0 deg F (1.11 deg C). Cooling is adjustable from 0.2 deg F (0.11 deg C) to 2.0 deg F (1.11 deg C).

7. Power source : 18 to 30 VAC, NEC, Class II, 50/60 Hz for hardwire (common wire) 3 wire, 3 wire with battery backup, 2 wire with battery, Battery power from 2 AA alkaline batteries.

8. Operating ambient: 32 deg F (0 deg C) to 105 deg F (41 deg C).9. Operating humidity: 90% non-condensing maximum.10. Dimensions of thermostat: 4.7 inches W x 4.4 inches H x 1.1 inches D (119 mm W x 112

mm H x 28 mm D).

F. Programmable Heat/Cool Thermostat:

1. Stages: 1 stage heat / 1 stage cooling.2. Programmable; 5/1/1 with 4 time periods per day.3. The display range of temperature: 41 deg F (5 deg C) to 95 deg F (35 deg C).4. The control range of temperature: 44 deg F (7 deg C) to 90 deg F (32 deg C).5. Loading Rate: 1 amp per terminal, 1.5 amp maximum all terminals combined.6. Wiring Specifications: Use shielded or nonshielded 18-22 gauge thermostat wire.7. Display accuracy: ± 1 deg F (0.556 deg C).8. Swing (cycle rate or differential): Heating is adjustable from 0.2 deg F (0.11 deg C) to


9. Power source : 18 to 30 VAC, NEC, Class II, 50/60 Hz for hardwire (common wire) 3 wire, 3 wire with battery backup, 2 wire with battery, Battery power from 2 AA alkaline batteries.

10. Operating ambient: 32 deg F (0 deg C) to 105 deg F (41 deg C).11. Operating humidity: 90% non-condensing maximum.12. Dimensions of thermostat: 4.7 inches W x 4.4 inches H x 0.8 inches D (119 mm W x 112

mm H x 20 mm D).

G. Multifunctional Heat/Cool Thermostat:

1. Stages: 2 stage heat / 2 stage cooling Conventional or 3 stage heat / 2 stage cooling with heat pump.

2. Programmable; 5/1/1 with 4 time periods per day.3. The display range of temperature: 41 deg F (5 deg C) to 95 deg F (35 deg C).4. The control range of temperature: 44 deg F (7 deg C) to 90 deg F (32 deg C).5. Loading Rate: 1 amp per terminal, 1.5 amp maximum all terminals combined.6. Wiring Specifications: Use shielded or nonshielded 18-22 gauge thermostat wire.7. Display accuracy: ± 1 deg F (0.556 deg C).8. Swing (cycle rate or differential): Heating is adjustable from 0.2 deg F (0.11 deg C) to


9. Power source: 18 to 30 VAC, NEC, Class II, 50/60 Hz for hardwire (common wire) 3 wire, 3 wire with battery backup, 2 wire with battery, Battery power from 2 AA alkaline batteries.

10. Operating ambient: 32 deg F (0 deg C) to 105 deg F (41 deg C).11. Operating humidity: 90% non-condensing maximum.



12. Dimensions of thermostat: 4.7 inches W x 4.4 inches H x 1.1 inches D (119 mm W x 112 mm H x 28 mm D).

H. Heated-Panel Thermostat:

1. Remote bulb unit with adjustable temperature range from [50 deg F (10 deg C) to 104 deg F (40 deg C)] <Insert temperature range>.

2. Snap action; open-on-rise, single-pole switch with minimum current rating adequate for connected pump or zone control valve.

3. Remote bulb on capillary tube, resistance temperature device, or thermistor for directly sensing radiant-panel temperature.

4. Stop pump or close zone control valves if heated-panel thermostat setting is exceeded.5. Corrosion-resistant, waterproof control enclosure.

I. Set Point Control:

1. Remote sensor unit with adjustable temperature range from – 40 deg F (-4 deg C) to 248 deg F (120 deg C).

2. Snap action; open-on-rise, 2 SPDT dry contacts, 1/2 hp @ 120 VAC, 9.8 FLA, 58.8 LRA.

3. Remote bulb on capillary tube, resistance temperature device, or thermistor for directly sensing radiant-panel temperature.

4. Stop pump or close zone control valves if heated-panel setting is exceeded.5. Corrosion-resistant, waterproof control enclosure.

J. Basic Heating Control Outdoor Temperature Reset Control:

1. Control: Microprocessor PID Control.2. Approvals: CSA C US< meets ICES & FCC regulations for EMI/RFI.3. Power Supply: 120 VAC +/- 10 percent 50/60 Hz 1300 VA.4. Floating Output: 24 VAC 0.34 A 8 V.5. Relays: 240 VAC 10 A 1/3 hp, pilot duty.6. Sensors: NTC thermistor.7. Remote bulb unit with adjustable temperature range from [35 deg F (2 deg C) to 100

deg F (38 deg C)] <Insert temperature based on design>.8. Operate based on outdoor air temperature. Control resets supply-water temperature

inversely with outdoor-air temperature as follows:

a. Low outdoor-air temperature, [Ranging from minus 60 deg F (minus 51 deg C) to 32 deg F (0 deg C)] <Insert temperature based on radiant design> with high supply-water temperature [70 deg F (21 deg C) to 220 deg F (104 deg C)] <Insert temperature based on radiant design>.

b. High outdoor-air temperature, [Ranging from minus 60 deg F (minus 51 deg C) to 32 deg F (0 deg C)] <Insert temperature based on radiant design> with low supply-water temperature [70 deg F (21 deg C) to 220 deg F (104 deg C)] <Insert temperature based on radiant design>.

9. Ambient Conditions: Indoor use only, 32 deg F (0 deg C) to 102 deg F (deg C), <90 percent RH non-condensing.

K. Precipitation and Temperature Sensor:



1. [Microprocessor-based] [Automatic] control with automatic and manual override.2. Precipitation and temperature sensors shall sense the surface conditions of heated surface

and shall be programmed to operate pumps as follows:

a. Temperature Span: 32 deg F (0 deg C) to 95 deg F (35 deg C).b. Idling Temperature Span: 20 deg F (minus 7 deg C) to 95 deg F (35 deg C).c. Cold Weather Cut Out Span: minus 29 deg F (minus 34 deg C) to 50 deg F (10 deg

C).d. Start pump if ambient temperature is below set point and precipitation is detected.e. Start pump if ambient temperature is below set point and precipitation is not

detected and system is intended to idle.f. Stop pump on detection of a dry surface plus time delay.g. Stop pump on detection of Cold Weather Cut Out Temperature.

3. Minimum 5-A contactor to start pumps.4. Precipitation sensor shall be mounted in heated surface.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine surfaces and substrates to receive radiant-heating piping for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

1. Ensure that surfaces and pipes in contact with radiant-heating piping are free of burrs and sharp protrusions.

2. Ensure that surfaces and substrates are level and plumb.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 APPLICATIONS

A. Install the following types of radiant-heating piping for the applications described:

1. Piping in Exterior Pavement: [ViegaPEX Barrier] [Viega FostaPEX].2. Piping in Interior Reinforced-Concrete Floors: [ViegaPEX Barrier] [Viega FostaPEX].3. Piping in Level Fill Concrete Floors (Not Reinforced): [ViegaPEX Barrier] [Viega

FostaPEX].4. Piping in Ceilings: [ViegaPEX Barrier] [Viega FostaPEX].5. Piping in Subfloors: ViegaPEX Barrier.6. Piping below Wood Floors: ViegaPEX Barrier.

3.3 INSTALLATION

A. Refer to manufacturer's most current installation instructions.



B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Indicate piping locations and arrangements if such were used to size pipe and calculate friction loss, expansion, pump sizing, and other design considerations. Install piping as indicated unless deviations to layout are approved on Shop Drawings or coordination drawings.

C. Install ViegaPEX Barrier at least 4 inches (102 mm) from edge of slabs, walls or other permanent objects.

D. Install ViegaPEX Barrier continuous from the manifold through the heated panel and back to the manifold without piping joints in heated panels. If coupling is required, use Viega PEX Press fitting and wrap in Viega's Coupling Repair Tape.

E. Avoid crossing tubing in slab unless minimum concrete thickness is met.

F. Square off ViegaPEX Barrier or FostaPEX with approved PEX Cutters.

G. Connect ViegaPEX Barrier or FostaPEX to manifold using approved Viega Manifold Adapters.

H. Use bend supports for pipe entering and exiting the slab.

I. Do not bend pipe in radii smaller than manufacturer's minimum bend radius.

J. Manifolds should be installed with brackets supplied by Viega LLC.

K. Install manifolds in accessible locations, or install access panels to provide maintenance access as required in Section 083113 "Access Doors and Frames."

L. Comply with requirements in Section 232113 "Hydronic Piping" and Section 232116 Hydronic Piping Specialties" for pipes and connections to hydronic systems and for glycol-solution fill requirements.

M. Fire- and Smoke-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors at pipe penetrations. Seal pipe penetrations with firestop materials according to Section 078413 "Penetration Firestopping."

N. Piping in Exterior Concrete:

1. Secure piping by attaching pipes to reinforcement using approved fasteners from manufacturer.

2. Space fasteners a maximum of 24 inches (610 mm) o.c. and at center of turns and bends.3. Maintain 2 inch (51 mm) minimum cover.4. Install a sleeve of 3/8 inch- (9.5 mm-) thick, foam-type insulation or PE pipe around

tubing and extending for a minimum of 12 inches (300 mm) on each side of slab expansion joints to protect the tubing passing through expansion joints. Anchor sleeve to slab form at expansion joints to provide maximum clearance for saw cut.

5. Install vapor barrier and insulation as per the radiant design. Ensure compression rating is suitable for structural engineer.

6. If pipe is being secured to insulation space fasteners a maximum of 24 inches (610 mm) and at center of turns and bends.

7. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working pressure.



8. After initial pressurization, ensure pressure has not dropped after 20 minutes. Fluctuations may occur due to temperature fluctuations and tubing expansion. If a drop has occurred add pressure to the system. Carry out testing for a minimum of 1 hour.

9. Maintain pressure in piping during concrete installation and continue for 24 hours after placement.

O. Piping in Sand Bed Exterior Paver:

1. Secure piping by attaching pipes to reinforcement using approved fasteners from manufacture.

2. Space fasteners a maximum of 24 inches (610 mm) o.c. and at center of turns and bends.3. Install insulation as per the radiant design. Ensure compression rating is suitable for

structural engineer. 4. If pipe is being secured to insulation space fasteners a maximum of 24 inches (610 mm)

and at center of turns and bends5. Maintain sand bed 1-1/2 inch (38 mm) minimum cover.6. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working

pressure.7. After initial pressurization, ensure pressure has not dropped after 20 minutes.

Fluctuations may occur due to temperature fluctuations and tubing expansion. If a drop has occurred add pressure to the system Carry out testing for a minimum of 1 hour. Maintain pressure in piping during sand and paver installation and continue for 24 hours after placement.

P. Piping in Sand Bed Exterior Asphalt:

1. Secure piping by attaching pipes to reinforcement using approved fasteners from manufacturer.

2. Space fasteners a maximum of 24 inches (610 mm) and at center of turns and bends.3. Install vapor barrier and insulation as per the radiant design. Ensure compression rating is

suitable for structural engineer. 4. If pipe is being secured to insulation space fasteners a maximum of 24 inches (610 mm)

o.c. and at center of turns and bends5. Maintain sand bed 1-1/2 inch (38 mm) minimum cover.6. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working


Fluctuations may occur due to temperature fluctuations and tubing expansion. If a drop has occurred add pressure to the system Carry out testing for a minimum of 1 hour. Maintain pressure in piping during sand and asphalt installation and continue for 24 hours after placement.

Q. Piping in Interior Reinforced-Concrete Floors:

1. Secure piping by attaching pipes to reinforcement using approved fasteners from manufacture.

2. Space fasteners a maximum of 24 inches (610 mm) and at center of turns and bends.3. Maintain 2 inch (51 mm) minimum cover.4. Install vapor barrier and insulation as per the radiant design. Ensure compression rating is

suitable for structural engineer.



5. If pipe is being secured to insulation space fasteners a maximum of 24 inches (610 mm) and at center of turns and bends

6. If Insulated Panel (RapidGridTM) is being used fastening is integrated into insulation and no additional fasteners are required.

7. Install a sleeve of 3/8 inch (9.5 mm) thick, foam-type insulation PVC or PE pipe around tubing and extending for a minimum of 12 inches (300 mm) on each side of slab expansion joints to protect the tubing passing through expansion joints. Anchor sleeve to slab form at expansion joints to provide maximum clearance for saw cut.

8. If tube passes metal expansion joints pass tubing under the joint.9. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working


Fluctuations may occur due to temperature fluctuations and tubing expansion. If a drop has occurred add pressure to the system Carry out testing for a minimum of 1 hour.

11. Maintain pressure in piping during concrete and floor covering installation and continue for 24 hours after placement.

R. Piping in Level Fill Suspended Concrete Floor (Not Reinforced):

1. Secure piping in concrete floors by attaching pipes to subfloor using approved fastener from manufacturer.

2. Space approved fasteners from manufacturer a maximum of 24 inches (610 mm) o.c. and at center of turns or bends.

3. Maintain 3/4 inch (19 mm) minimum cover.4. Install insulation as per radiant design.5. Install a sleeve of 3/8 inch- (9.5 mm-) thick, foam-type insulation PVC or PE pipe around

tubing and extending for a minimum of 12 inches (300 mm) on each side of slab expansion joints to protect the tubing passing through expansion joints. Anchor sleeve to slab form at expansion joints to provide maximum clearance for saw cut.

6. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working pressure.

7. After initial pressurization, ensure pressure has not dropped after 20 minutes. Fluctuations may occur due to temperature fluctuations and tubing expansion. If a drop has occurred add pressure to the system Carry out testing for a minimum of 1 hour.


S. Piping in Ceiling:

1. Secure piping by attaching pipes to ceiling substrate using clamps or staples.2. Space clamps or staples a maximum of 24 inches (610 mm) o.c. and at center of turns or

bends.3. Maintain 1-1/2 inch (38 mm) minimum thermal mass cover.4. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working






T. Piping in Climate Panel:

1. Climate Panel may be installed directly on top of subfloor.2. When installing on top of concrete, plan on installing a vapor barrier using 6 mil poly

plastic sheeting and a layer of 3/4 inch (19 mm) plywood.3. When installing a floating floor on top of concrete, include an extra layer of foam below

the Climate Panel and plan on installing a vapor barrier using 6 mil poly plastic sheeting.4. To determine the direction of Climate Panel, joist direction and finished flooring need to

be defined.5. Install panels 1/2 inch (13 mm) from the wall.6. Fasten panels with 5 screws on each side (10 screws per panel), or use 1/2 x 1-1/4 inch

(12 x 32 mm) crown staples.7. Always stagger Climate Panel joints.8. Run 3/16 to 1/4 inch (4.8 to 6.4 mm) bead of Viega Groove Tube Silicone into the panel

grooves prior to installing 5/16 inch (8 mm) Tubing. Use Viega’s Groove Tube Silicone or 100 percent silicone rated for 180 deg F (82 deg C) guaranteed not to damage Tubing or Aluminum.

9. Install insulation under subfloor per radiant design.10. Maintain pressure test of a minimum 100 psig (689 kPa) or 1.5 times system working



12. Maintain pressure in piping during floor covering installation and continue for 24 hours after placement.

U. Piping below Wood Floor with Climate Trak:

1. Remove nails from bays and coordinate penetrations in floor2. Reference local building codes before drilling or modifying structural members. 3. Drill 1-1/4 inch (32 mm) holes through center of each joist. Keep 3 inch (76 mm) from

subfloor. Reference Viega’s Installation Guide for drilling joists4. Attach Climate Traks 8 to 10 inches (203 to 254 mm) from closest hole that was drilled. 5. Stop Climate Traks 12 to 16 inches (305 to 406 mm) short of the bend in the circuit6. Secure 4 ft (1219 mm) Climate Traks with 5 screws per side.7. Secure 8 ft (2438 mm) Climate Traks with 10 screws per side 8. Maintain 1 inch (25.4 mm) between Climate Traks and maintain pipe space per radiant

design9. Install foil face insulation with an R-value per radiant design and leave 1 to 2 inch (25.4

to 51 mm) air gap.

V. Piping below Wood Floor with Heat Transfer Plates:

1. Remove nails from bays and coordinate penetrations in floor2. Reference local building codes before drilling or modifying structural members. 3. Drill 1-1/4 inch (32 mm) holes through center of each joist. Keep 3 inch (76 mm) from

subfloor. Reference Viega’s Installation Guide for drilling joists4. Attach Heat Transfer Plates 8 to 10 inches (203 to 254 mm) from closest hole that was

drilled. 5. Stop Heat Transfer Plates 12 to 16 inches (305 to 406 mm) short of the bend in the circuit



6. Maintain 1 inch (25.4 mm) between Heat Transfer Plates and maintain pipe space per radiant design

7. Run 3/16 to 1/4 inch (4.8 to 6.4 mm) bead of Viega Groove Tube Silicone into the grooves prior to installing Tubing. Use Viega’s Groove Tube Silicone or 100 percent silicone rated for 180 deg F (82 deg C) guaranteed not to damage Tubing or Aluminum.

8. Install foil face insulation with an R-value per radiant design and leave 1 to 2 inches (25.4 to 51 mm) air gap.

W. Revise locations and elevations from those indicated as required to suit field conditions and ensure integrity of piping and as approved by Architect.

X. After system balancing has been completed, mark balancing valves to permanently indicate final position per design.

Y. Perform the following adjustments before operating the system:

1. Open valves to fully open position.2. Check operation of automatic valves.3. Set temperature controls so all zones call for full flow.4. Purge air from piping.

Z. After concrete or plaster heating panel has cured as recommended by concrete or plaster supplier, operate radiant-heating system as follows:

1. Start warm up after concrete has reached its final set (curing complete).2. Set supply water temperature to 77 deg F (25 deg C) for the first three days.3. Increase supply water temperature to the set point in gradual increments for the next 4

days. Maximum of a 50 deg F (10 deg C) increase in a period of 24 hour).4. For freeze protection, operate at a minimum of 60 deg F (16 deg C) supply-water

temperature or provide adequate antifreeze protection.

3.4 FIELD QUALITY CONTROL

A. Prepare radiant-heating piping for testing as follows:

1. Open all isolation valves and close bypass valves.2. Open and verify operation of zone control valves.3. Flush with clean water and clean strainers.

B. Perform the following tests and inspections[ with the assistance of a factory-authorized service representative]:

1. Leak Test: After installation, charge system and test for leaks. Subject piping to hydrostatic test pressure that is not less than 1.5 times the design pressure but not more than [100 psig (690 kPa)] <Insert value>. Repair leaks and retest until no leaks exist.

2. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

C. Radiant-heating piping will be considered defective if it does not pass tests and inspections.



D. Prepare test and inspection reports.

E. Protect hydronic piping system from damage during construction.

END OF SECTION 238316


section 238316 - radiant-heating hydronic …€¦ · web viewif tube passes metal expansion joints...

Documents